User Manual
Modular Multi-service Integrated Optical Transmission Multiplexer
17
Monitoring interface of RS422/485:
definition: 8(RX+), 7(RX-),
6(TX-), 5(TX+); Connect with the NM module with straight-through line.
Monitoring interface Selection of RS232 / (RS422/485)
:
Use the
DIP switch under the soleplate of network management board to select
RS232 or RS485 interface as the network management interface. In the
case of RS232: 1,2,3,4,5 of DIP switch are dialed to ON, and other to OFF;
in the case of RS485/RS422: 6,7,8 of DIP switch are dialed to ON, and
1,2,3,4,5 to OFF.
3. Overhead alarm output
Alarm output port: Despite the above-mentioned overhead alarm
mode, the fourth bit pin of DATA/ALM port or NMS PORT is an alarm
output terminal, which can be led out if required. The alarm output mode
can be selected to be relay or electrical level mode. In the case of
electrical level, a 5V electrical level alarm signal will be exported; in the
case of relay, once there is an alarm, the relay will be connected, when the
overhead alarm signal is grounded so an alarm will be emitted.
§6.7.2 Ethernet interface
The equipment provides four 10/100Mbps fast Ethernet interfaces.
The UTP cable can adopt cables in class 3, 4 or 5, and the maximum
length of TP cable is 100m.
Note: When using Ethernet, it shall not be allowed that two
equipments are connected by two or more interfaces. When the
equipments at two ends have been connected via optic-fiber, it is not
allowed to add connections with the Ethernet.
Optical Multiplexer
1
RJ45 2
3
2
3 DB9
5
PC
